I think that was the Imjin River Bill. And before anyone points out my mistake, I meant the 42nd not 47th.
Jez Lowe did a song about Beamonts Light Horse but I don't know if it was authentic. Then we have the unspecified Bonny Light Horseman. There are unspecified dragoons in Martinmas Time. Someone just refreshed the "Soldier" thread which is a song about a Parachute Regiment soldier. The Recruited Collier must have joined a line regt. since he hoped to be made a grenadier, and we are told he wore a cockade. Route of the Blues was mentioned in the other thread. A song I like to sing is Kippling's Soldier Soldier which does not give a regt, but "I seen him serve the queen in a suit of rifle green" narrows it down.
Not a regt. but there is 51st highland Division's Farewell to Sicily.
I won't mention McAlpine's Fusileers.